Siemens SIRIUS 3RT Manual page 384

Accessories
9.26 Assembly kit for reversing contactor assemblies (sizes S00 to S3)
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Attach the wiring modules for connecting the main current paths to the contactors from above.
Attach the wiring modules for connecting the main current paths to the contactors from below.
Screw the wiring modules in place.
To connect the control current paths, push the conductors into the contactor terminals.
To connect the control current paths, push the conductors into the contactor terminals.
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006